var createError = require('http-errors');
var express = require('express');
var path = require('path');
var fs = require('fs');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const session = require('express-session');
const redisStore = require('connect-redis')(session);
const redisClient = require('./db/redis');
// var indexRouter = require('./routes/index');
// var usersRouter = require('./routes/users');
const blogRouter = require('./routes/blog.js');
const userRouter = require('./routes/user.js');
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
//配置环境
const ENV = process.env.NODE_ENV;
if (ENV !== 'production'){
  //开发环境
  app.use(logger('dev'))
} else {
  //线上环境
  const logFileName = path.resolve(__dirname,'logs','access.log');
  const writeStream = fs.createWriteStream(logFileName,{
    flags:'a'
  });
  app.use(logger('combined',{
    stream:writeStream
  }))
}
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
//app.use(express.static(path.join(__dirname, 'public')));

const sessionStore = new redisStore(
  {
    client:redisClient
  });
app.use(session({
  resave: false, //添加 resave 选项
  saveUninitialized: true, //添加 saveUninitialized 选项
  secret:'_ayuan#*',
  cookie:{
    // path:'/',//默认配置
    // httpOnly:true, //默认配置
    maxAge: 24 * 60 * 60 *1000,
  },
  store:sessionStore
}));

//路由
// app.use('/', indexRouter);
// app.use('/users', usersRouter);
app.use('/api/blog',blogRouter);
app.use('/api/user',userRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
